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4.2 The Push Parser Function yypush_parse

(The current push parsing interface is experimental and may evolve. More user feedback will help to stabilize it.)

You call the function yypush_parse to parse a single token. This function is available if either the ‘%define api.push-pull push’ or ‘%define api.push-pull both’ declaration is used. See A Push Parser.

— Function: int yypush_parse (yypstate *yyps)

The value returned by yypush_parse is the same as for yyparse with the following exception: it returns YYPUSH_MORE if more input is required to finish parsing the grammar.